JP2013068170A - Oil catch device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an oil catch device configured to allow impurities caught temporarily in an oil catch part to pass through an oil catch tank, thereby discharging only the discharge air separated from the impurities to the atmosphere.SOLUTION: The oil catch tank 10 into which a mixture of the impurities with the discharge air flows is provided continuous to the oil catch part, the mixture being ejected from the oil catch part. The mixture flowing in the oil catch tank 10 is separated into the impurities and the discharge air. The separated impurities are accumulated in the oil catch tank 10, and the separated discharge air is discharged to the atmosphere from the oil catch tank 10. A pressure reduction means 27 is incorporated in the oil catch tank 10.The mixture flowing from an inflow part 25 is moved by the pressure reduction means 27. The force of a current of the mixture is weakened, and the mixture is separated into the impurities and the discharge air.

Description

  The present invention is a pipe in the middle of an air supply line that supplies high-pressure air (high-pressure air) induced by an air conditioner press driven by an engine to various air operating devices, water mixed with high-pressure air, engine oil, The present invention relates to an oil catch device that catches and accumulates liquefied impurity substances such as sludge and carbon that are fuel debris, and separates and separates discharge air used when discharging impurity substances from the impurity substances into the atmosphere.

Conventionally, for example, an air processing device (hereinafter referred to as “prior art”) 3 having an air dryer in the chassis frame 5 of the rear single-shaft type tractor 1 in which the rear wheels shown in FIGS. Is installed. The air dryer in the air processing apparatus 3 removes impurities such as moisture, engine oil, sludge, and carbon in advance and then supplies compressed air to an air tank provided in an air system circuit for a brake or an air suspension. Yes. Then, the air processing device 3 controls the air pressure of the air tank or releases the impurity into the atmosphere. Reference numeral 6 denotes a coupler apparatus mounted on the chassis frame 5.

More specifically, the air dryer is of an air chamber integrated type, and is provided in the middle of an air pipe that forms an air system circuit that connects an air conditioner presser and an air tank. The air dryer has a function of removing moisture contained in the air compressed by the air conditioner presser. Usually, the air conditioner presser is driven by the engine by using the same lubricating oil system as the engine lubricating oil. For this reason, the air compressed by the air conditioner presser contains oil mist such as engine oil, sludge, carbon, etc. Impurities such as oil mist are contained in the desiccant and oil contained in the air dryer. The impurities removed by a removing means such as a filter are temporarily accumulated in the oil catch section.

On the other hand, the air dryer has a built-in air pressure governor for controlling the air pressure of the air tank 4, and releases air compressed by an air conditioner presser into the atmosphere according to the internal pressure of the air tank 4. The internal pressure is controlled. Air discharge is performed by ejecting discharge air from an air dryer. Impurities that are temporarily captured and accumulated by the oil catch portion are injected toward the outside, for example, the road surface together with the discharge air when the discharge air is jetted. Such an injection operation is frequently and automatically executed regardless of the traveling state of the vehicle under a situation where the engine is operated. In this way, the air processing device prevents impurity substances from being supplied to the air tank and the various systems described above, and protects air equipment such as brake equipment and air suspension equipment.

In addition, there exists a thing which has a structure as shown to a nonpatent literature 1 as a technique to capture | acquire impurity. That is, a so-called blow-by gas system that recirculates exhaust gas is provided in an engine intake system of a motor sports vehicle, and blow-by gas that has leaked into the crank chamber of the engine is re-circulated to the intake system. A so-called oil catch tank is provided in the middle of the pipe for recirculating the blow-by gas, and removes impurities such as blow-by gas leaking into the crank chamber of the engine, sludge solidified from the engine oil, and carbon. As a result, the engine output efficiency is improved.

http://www.carbing.co.jp/japan/products/tank/oil.shtml

  However, in the air processing device according to the above-described conventional technology, the harmful impurity substance in a dark and mushy state is not captured and accumulated by the oil catch device, but each time from the oil catch device to the traveling road surface And are often ejected and thrown away on the roads inside the factory. Therefore, there is a possibility that the road is stained with a black color.

  Further, the technique described in Non-Patent Document 1 described above is a technique in which an oil catch tank is provided in the intake system of the engine so that impurities are not mixed into the intake air to the engine. Unlike the case where water and impurities contained in the air generated by the air conditioner are captured by the oil catch portion and then swept away to the external environment by the discharge air, there is no relation.

  The present invention has been made to solve the above-mentioned problems of the prior art, and does not throw away the mixture of moisture and impurities trapped in the oil catch part to the outside, but once in the oil catch part. After catching, it is guided to the oil catch tank provided downstream of it along with the discharge air, then separated into discharge air and impurity, and the impurity is captured and stored in the oil catch tank, while the discharge air is oil catch Exhaust (discharge) from tank to atmosphere. Thereby, it becomes possible to provide an environmentally friendly oil catching device by avoiding careless disposal of impurities.

The present invention provides an air dryer in an air pipe communicating with an air conditioner presser driven by an engine and an air tank, and temporarily traps impurities such as moisture, engine oil, sludge and carbon in the air dryer. An oil catch part is provided, and the impurity substance is wiped out by the discharge air ejected from the air dryer. In the oil catch part, a mixture of the impurity substance ejected from the oil catch part and the discharge air is provided. An oil catch tank that is allowed to flow in is connected, and the mixture that has flowed into the oil catch tank is separated into impurity and discharge air, and the impurity is accumulated in the oil catch tank while being separated from the impurity. This is characterized by exhausting the discharge air from the oil catch tank to the atmosphere. It is a Rukyatchi apparatus.

According to the present invention, the liquid impurity that is temporarily accumulated in the oil catch portion is ejected as a mixture together with the discharge air ejected from the air dryer. The mixture from which the oil catch portion has been cleaned flows into the oil catch tank disposed on the downstream side of the oil catch portion. Liquid impurities such as water, engine oil, fuel sludge and carbon are caught and collected in an oil catch tank. On the other hand, the discharge air used for ejection is separated from the impurities and exhausted from the oil catch tank to the atmosphere. Thus, only the discharge air separated from the oil catch tank is released to the atmosphere, so that the external environment can be maintained in a good state.

 (2) In the present invention, the oil catch tank is housed in the casing, an inflow portion provided above the casing and communicating with the oil catch portion, an exhaust portion provided above the casing, and the casing. The oil catching device according to (1), further comprising: a pressure relaxation member that relieves the momentum of the flow of the mixture by circulating the mixture flowing in from the inflow portion.

According to the present invention, since the mixture is circulated through the pressure relaxing means, the momentum of impurities and the flow of the discharge air can be relaxed. As a result, the mixture is separated into the impurity and the discharge air, and the separated one impurity is accumulated in the oil catch tank. Only the other discharged air is separated and naturally exhausted to the atmosphere via the exhaust section.

(3) In the present invention, a partition plate that partitions the space in the casing into an upper layer portion and a lower layer portion is provided in the casing, and a ventilation hole that allows passage of the discharge air is formed in the partition plate. (2) The oil catching device according to (2).
According to the present invention, the impure material after flowing through the pressure relaxing means is relaxed and dispersed into the impure material and the discharge air. Due to the presence of the partition plate, it is possible to suppress the backflow of the impurity directly from the lower layer portion to the upper layer portion, and only the discharge air flows through the vent hole to the upper layer portion. Thereby, separation of the mixture is efficiently performed, and it is possible to avoid discharge impurities from being mixed in the discharge air, and to discharge only the discharge air from the exhaust part, which is convenient for environmental conservation.

(4) The present invention is the oil catching device according to (3), wherein the partition plate is attached while being slightly inclined downward from a horizontal state toward the inflow portion from the exhaust portion.
According to the present invention, even when impurities are attached to both the upper and lower surfaces of the inclined partition plate, the impurities flow toward the inflow portion and are directed to drop from the vent hole to the lower layer portion. . As a result, it is possible to prevent the impurities attached to the partition plate from being scattered by the momentum of the discharge air and released from the exhaust part to the atmosphere.

(5) In the present invention, any one of the above (1) to (4), wherein the pressure relaxation means is a metal wool body formed by compressing a fiber material such as steel or stainless steel. It is an oil catching device given in.
According to the present invention, since the pressure relaxation means is formed of the metal wool body, the mixture can be efficiently separated into the impurity and the discharge air.

(6) According to the present invention, a notch portion is formed in the partition plate, and the metal wool body is provided from the inflow portion to a position that substantially reaches the bottom portion of the lower layer portion through the notch portion. The oil catching device according to (5), which is characterized in that
According to the present invention, since the metal wool body is held through the notch formed in the partition plate and the bottom is seated on the casing, the metal wool body is positioned and held with respect to the casing, and is subject to vibration from the outside. On the other hand, a situation in which the metal wool body dances in the casing can be avoided.

(7) The present invention is also the oil catching device according to (6), wherein the ventilation hole and the notch are arranged in a low part in the vicinity of the inflow part away from the exhaust part.
According to the present invention, by allowing the metal wool body held in the ventilation hole and the notch to be present in a low part away from the exhaust part, it is possible to suppress the discharge of impurity particles as much as possible to the atmosphere. Become.

(8) The present invention is also the oil catch device according to any one of (1) to (7), wherein a drain cock is provided below the casing.
According to the present invention, when a predetermined amount of impurity accumulates in the lower layer of the oil catch tank, the impurity can be received and taken out by an appropriate container simply by opening the drain cock, and maintenance inspection You will be able to work efficiently.

(9) The present invention according to any one of (2) to (8), wherein a visual recognition part for visually recognizing an accumulated amount of impurities from the outside is provided on a side surface of the casing. Oil catch device.
According to the present invention, it is possible to easily check the amount of impurity accumulated from the outside by looking at the visual recognition portion of the amount of impurity accumulated in the lower layer portion, and to improve the efficiency of maintenance and inspection work of the oil catch device. become able to.

(10) The invention according to any one of (2) to (9), characterized in that a detachable lid for taking out impurities accumulated inside is provided on a side surface of the casing. This is an oil catch device.
According to the present invention, it becomes possible to easily perform maintenance and inspection inside the oil catch tank by removing the lid. In this case, it is possible to prevent the impurity from leaking to the outside by attaching the lid portion to the casing in a detachable manner via an air-watertight member by packing.

  According to the present invention, the impurities temporarily captured by the oil catch portion are wiped out by the discharge air ejected from the air dryer. The mixture that has been swept away and flowed into the oil catch tank is separated and separated into impurities and discharge air in the oil catch tank. While the separated impurity is accumulated in the oil catch tank, only the discharge air not mixed with impurities can be separated and exhausted from the oil catch tank to the atmosphere, so that the environment can be kept good.

It is a system configuration figure showing typically the mounting arrangement of the oil catch device concerning a first embodiment of the present invention. It is the external view which fractured | ruptured a part of oil catching device of FIG. 1, and showed the internal structure. It is a front view of the oil catching device which showed the flow of the mixture which flows through the inside of the oil catching device, impurities, and discharge air. (a) is a top view of FIG. 3, (b) is a top view of a partition plate. (a) is the side view which partially showed the left side surface of FIG. 3, Similarly (b) is the side view which partially showed the exhaust part of FIG. It is the external appearance perspective view which decomposed | disassembled and showed the oil catch tank which concerns on the modification of the said embodiment. (a) is a plan view schematically showing a rear uniaxial tractor, (b) is a side view thereof, and (c) is a side view of the rear biaxial tractor.

Hereinafter, an embodiment according to a shoe of the present invention will be specifically described with reference to FIGS. In this embodiment, the present invention can be applied to the rear uniaxial type tractor shown in FIG. 7 (a) or the rear biaxial type tractor shown in FIG. 7 (c). Needless to say, the present invention can be appropriately applied to the fields of buses, specially equipped vehicles, ordinary trucks, passenger cars, and general industrial machines that generate compressed air.
Reference numeral 10 denotes an oil catch tank as an essential element of the present invention provided in addition to the air treatment device 20. The oil catch tank 10 is connected to an oil catch portion 18 attached to the air dryer 11, which is known per se and is partially shown in a sectional view, through a connecting pipe 13.
The air dryer 11 is connected through an air inflow pipe 12 to an air conditioner presser 14 denoted by A / C. The air tank 15 denoted by reference sign A / T is connected to the air dryer 11 via the air outflow pipe 16. That is, the air system circuit 19 is formed by connecting the air compressor 14, the air dryer 11, and the air tank 15 via the air inflow pipe 12 and the air outflow pipe 16.

In the following description, before describing the oil catch tank 10 essential to the present invention, an outline of the air processing device 20 centering on the air dryer 11 incorporated in the air system circuit 19 will be described. In addition, the air dryer 11 which concerns is an example, Comprising: The air dryer provided with structures other than this may be sufficient.
That is, the air conditioner presser 14 is used in common with lubricating oil of a lubricating oil system through which engine oil (lubricating oil) circulates, and is driven by an engine (not shown). Although one air tank 15 is illustrated in FIG. 1, it goes without saying that an appropriate number of tanks are provided according to the air system circuit 19.

Inside the air chamber 17 of the air dryer 11, an oil catch portion 18, a drain valve 22, or a governor portion for adjusting a known air pressure (not shown) and a desiccant are incorporated. This governor has a function of controlling the air pressure in each air tank 15 by releasing the air compressed by the air conditioner presser 14 to the atmosphere according to the air pressure in the air tank 15.
Note that reference numeral 23 is a multi-function valve having various functions, for example, when air leakage or the like occurs in one or more circuits of the air system circuit 19, the minimum necessary air is supplied to other normal circuits. By ensuring, it has the function to ensure the minimum braking force.

Thus, when the air conditioner presser 14 is driven by the air dryer 11 constituting the air processing device 20, the generated compressed air flows into the air dryer 11 through the air inflow pipe 12 as shown by an arrow in FIG. 1. Impurities such as oil mist are removed by passing through the oil filter 18, and moisture is removed by passing through a desiccant (not shown). In this way, only dry air is supplied and stored in each predetermined air tank 15 via the multi-function valve 23 as indicated by white arrows.
When the air pressure of the air system circuit 19 or the air tank 15 reaches the high specified pressure of the governor part when the air conditioner presser 14 is driven, the governor part is injected by the operation of the governor part.

The drain valve 22 is opened by the pressure of the discharge air, and the inside of the air chamber 17 communicates with the atmosphere via the drain valve 22. Then, the air flow direction in the air dryer 11 flows in the direction opposite to the arrow shown in FIG. As a result, the impurities and moisture temporarily trapped in the oil catch portion 18 flow to the downstream connection pipe 13 as a mixture that is integrated with the discharge air.

Next, the oil catch tank 10 which is a characteristic essential element of the present invention provided in addition to the air processing device 20 will be specifically described with reference to FIGS. That is, the oil catch tank 10 is a box-shaped casing 24 formed by sheet metal molding of stainless steel or steel, an inflow portion 25 that is provided above the casing 24 and can be connected to the connecting pipe 13, and above the casing 24. A chimney-shaped exhaust part 26 that naturally discharges the discharge air ejected from the air dryer 11 to the atmosphere, and a mixture of impurities and discharge air that are housed in the casing 24 and flow in from the inflow part 25 circulate. The pressure relaxation means 27 that relieves the momentum of the flow, and the partition plate 28 that is housed in the casing 24 and that partitions the internal space of the casing 24 into an upper layer portion U and a lower layer portion D, is formed.

The partition plate 28 is preferably provided so as to be inclined downward from the exhaust portion 26 toward the inflow portion 25. In addition, the partition plate 28 is formed with a notch portion 29 in which an inclined lower corner portion is notched, and a plurality of ventilation holes 30 that are bored in the vicinity of the notch portion 29. The notch 29 is disposed below the inflow portion 25. Although the ventilation hole 30 is provided in the vicinity of the notch 29, it is needless to say that the ventilation hole 30 may be formed in the remaining part of the partition plate 28.

The pressure relaxation means 27 is installed in such a manner that its lower end is seated on the bottom of the casing 24 and is vertically placed from the lower layer D to the upper layer U, and the upper layer of the pressure relaxation means 27 is the inflow portion 25. Connected so as not to be discontinuous. Thereby, a mixture can be made to flow in the inside of the pressure relaxation means 27, without leaking.
The pressure relaxation means 27 is a metal wool body in which a metal material such as steel, copper, stainless steel, brass or the like is made into a fiber and has elasticity like cotton. Specifically, as shown in FIG. 2, for example, steel wool is preferable as a metal wool body in which fine ventilation holes are formed by compressing and rounding a fibrous fine wire made of steel (hereinafter referred to as “pressure relaxation means”). Is also referred to as “steel wool”.) In addition to metal, the structure may be a wool structure using a fibrous material made of a synthetic resin material. Moreover, the laminated body formed by laminating | stacking the sheet-like raw material which has a mesh structure may be sufficient. Furthermore, the aspect which uses filters, such as a strainer and sponge, may be sufficient. In other words, any means having a structure capable of relaxing the momentum of the flow when the high-pressure mixture flows can be applied to the present embodiment.

In addition, a drain cock 31 is provided below the casing 24 where the steel wool 27 is seated, so that the impurities accumulated in the lower layer D can be opened during maintenance inspection and received in a container for processing.
Further, a viewing window 32 is provided on the side surface of the casing 24 for visually recognizing the amount of accumulated impurities. This makes it possible to predict the maintenance inspection time by visually checking the amount of accumulated impurity in the lower layer D.
The roof portion 21 is provided above the exhaust portion 26 as shown in FIGS. 1, 3, and 5 so that the exhaust portion 26 cannot be seen from above. Thereby, while assisting natural exhaust of discharge air, it becomes possible to avoid that rain etc. enter from the outside.

Since the present embodiment is configured as described above, the impurity material mixed in the liquid state such as water, engine oil, fuel sludge, sludge, or carbon that is temporarily captured by the oil catch portion 18 is the governor. By the operation of the unit, it is ejected as a mixture together with the discharge air ejected from the air dryer 11 and enters the inside of the oil catch tank 10 via the connecting pipe 13 and the inflow part 25.

When the mixture of the impurity material and the discharge air flows down the steel wool 27 as the pressure relaxation means from the top to the bottom, the momentum is decelerated, and the discharge air is separated from the impurity material and goes out of the pressure relaxation means 27. Then, since the impurity has a large specific gravity, it flows down to the pressure relaxation means 27. In this way, impurities are accumulated in the lower layer portion D of the oil catch tank 10.
On the other hand, the discharge air used for ejection passes through the upper layer U of the oil catch tank 10 and is exhausted from the exhaust 26 to the atmosphere as shown by the arrows in FIG.
As described above, according to the present embodiment, the impurity material ejected integrally with the discharge air from the oil catch portion 18 flows into the pressure relaxation means 27 in the oil catch tank 10, so that the discharge air and the impurity material are discharged. And to separate smoothly. Thereby, the impurity is accumulated in the lower layer portion D of the oil catch tank 10, and the discharge air passes from the lower layer portion D through the ventilation hole 30 to the upper layer portion U.
And is exhausted to the atmosphere via the exhaust part 26.

On the other hand, since the amount of impurities accumulated in the lower layer portion D can be confirmed through the visual recognition window 32, it is possible to schedule maintenance and inspection work. When a predetermined amount of impurities is accumulated, the draining impurities can be received and taken out in a container such as a bucket simply by opening the drain cock 31, and the road surface and the like can be soiled with impurities. It can be surely prevented.
Further, since the pressure relaxation means 27 is held using the notch portion of the partition plate, an oil catching function can be maintained and an oil catching device having a simple structure can be obtained.
Further, since the ventilation holes 30 formed in the partition plate 28 are arranged in the vicinity of the notch 29, the impurity attached to the partition plate 28 easily flows along the inclination of the partition plate, and the accumulation of the impurity is promoted. In addition, the impurities attached to the partition plate can be prevented from becoming scattered particles and being discharged into the discharge air.

Moreover, since the pressure relaxation means 27 is locked using the notch 29, the positioning holding force of the pressure relaxation means 27 can be increased, and as a result, the durability of the oil catch tank 10 can be improved.
Furthermore, since all the mixture containing discharge air and impurities is introduced into the pressure relaxation means 27, the momentum of the discharge air and impurities can be reduced smoothly, and the separation function between the impurity and discharge air can be enhanced. it can.
The present invention is not limited to the above-described embodiment, and various modifications can be made without departing from the spirit and technical idea thereof.

The oil catch tank 10 according to the above embodiment is configured to take out the impurities accumulated in the lower layer D by opening and closing the drain cock 31, but in addition to this, the oil catch tank 33 according to the modification shown in FIG. It is also possible to do. That is, a flange 35 is provided on the periphery of the opening formed on the side surface of the casing body 34, and the lid member 36 is detachably attached to the casing body 34 so as to face the flange 35. Bolt holes 37 and 38 for inserting fasteners such as bolts and nuts (not shown) are provided in the flange 35 and the lid member 36.

Thus, in this modified example, the oil catch tank 33 that can capture the impurity as in the above embodiment can be formed by attaching the lid member 36 to the flange 35 via a packing (not shown) during normal use. Further, when performing maintenance and inspection, the lid member 36 is removed from the casing main body 34, so that it is as if the drain cock is opened. That is, by arranging a container such as a bucket that is easy in advance and receiving the impurities accumulated in the oil catch tank 33, the impurities can be easily taken out without polluting the surrounding environment.

Furthermore, any apparatus having an air supply line can be applied not only to trucks, buses, specially equipped vehicles, and passenger cars, but also to general industrial machinery fields.
Further, the vent hole may be formed in a size that is appropriately large or small, and a mesh material may be attached to the vent hole.
Moreover, although the drain cock 31 was provided in the lower surface of the oil catch tank 10 in the said embodiment, of course, the aspect provided in the side surface may be sufficient.

  INDUSTRIAL APPLICABILITY The present invention is applied to an oil catch device that can maintain a natural environment by being employed in the fields of tractors, trucks, buses, specially equipped vehicles, passenger cars, and general industrial machines.

DESCRIPTION OF SYMBOLS 10 Oil catch tank 11 Air dryer 12 Air inflow pipe 13 Connection pipe 14 Air-conditioner presser 15 Air tank 16 Air outflow pipe 17 Air chamber 18 Oil catch part 19 Air system circuit 20 Air processing device 21 Roof part 22 Drain valve 23 Multifunctional valve 24 Casing 25 Inflow part 26 Exhaust part 27 Pressure relaxation means (steel wool)
28 Partition plate 29 Notch 30 Ventilation hole 31 Drain cock 32 Viewing window 33 Oil catch tank 34 Casing body 35, flange 36 Lid member 37, 38 Bolt hole

Claims (10)

An air dryer is provided in the air piping that communicates with the air tank that is driven by the engine and the air tank, and an oil catch is provided in the air dryer to temporarily capture impurities such as moisture, engine oil, sludge, and carbon. An oil catch tank in which a mixture of the impurity material ejected from the oil catch portion and the discharge air is allowed to flow into the oil catch portion in the case where the impurity matter is wiped out by the discharge air ejected from the air dryer. The mixture that has flowed into the oil catch tank is separated into impurity and discharge air, and the impurity accumulates in the oil catch tank, while the discharge air separated from the impurity is oil catched. An oil catch device that exhausts air from a tank to the atmosphere.   The oil catch tank is housed in the casing, flows into the inflow portion, and is provided in the casing, an inflow portion provided above the casing and communicating with the oil catch portion, an exhaust portion provided above the casing. The oil catch device according to claim 1, further comprising a pressure relaxation member that relieves the momentum of the flow of the mixture by circulating the mixture. 3. A partition plate for partitioning a space in the casing into an upper layer portion and a lower layer portion is provided in the casing, and a ventilation hole that allows passage of the discharge air is formed in the partition plate. Oil catch device.   The oil catch device according to claim 3, wherein the partition plate is attached with a slight downward inclination from a horizontal state toward the inflow portion from the exhaust portion. The oil catching device according to any one of claims 1 to 4, wherein the pressure relaxation means is a metal wool body formed by compressing a fiber material such as steel or stainless steel. The notch part is formed in the partition plate, and the metal wool body is provided from the inflow part to the position that passes through the notch part and substantially reaches the bottom part of the lower layer part. Oil catch device.   The oil catch device according to claim 6, wherein the ventilation hole and the cutout portion are arranged in a low part in the vicinity of the inflow portion apart from the exhaust portion.   The oil catch device according to any one of claims 1 to 7, wherein a drain cock is provided below the casing.   The oil catch device according to any one of claims 2 to 8, wherein a visual recognition part for visually recognizing an accumulated amount of impurities from the outside is provided on a side surface of the casing.   The oil catch device according to any one of claims 2 to 9, wherein a detachable lid for taking out impurities accumulated therein is provided on a side surface of the casing.